You are likely hitting SDC-7481. You can confirm this by searching your YARN application logs for "NoClassDefFoundError" for the "EscapeUtil" class. This has been fixed in 3.0.0.0, which will be released in the next few weeks. This bug was introduced in SDC v2.7, so you'd be able to work around this by using a previous version if you'd rather wait for the 3.0 release than use master or the latest release candidate for 3.0 (which can be found here)